Beginners June 2008

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MemoryUsage
by Rob Rothwell 10 Jun '08

10 Jun '08

Can anyone explain what exactly MemoryUsage tells me if I see 47.7M/49.9M = 95.7%? Thanks, Rob

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Squeak Custom Menu Items
by Rob Rothwell 10 Jun '08

10 Jun '08

I'm sure I'm just not seeing something obvious: how can I add a custom menu item to the world menu for routine scripts and such that run? It seems like there ought to me something like world->custom->add item that lets you browse to a method or add a chunk of code... Probably is, and I just can't find it or the right key words (Squeak custom menu) so Google could! Thanks, Rob

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remembering variables
by peter h meadows 09 Jun '08

09 Jun '08

Is there a way to make squeak remember what variables have been set to in the past? So as I'm browsing the source it will tell me which type of object a variable contained last time that bit of code was running?

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Ubuntu and Squeak
by Rob Rothwell 07 Jun '08

07 Jun '08

Ok...so we sort of got Ubuntu running on a server...which VM should I go get? (Yes, I am so NOT "Linux-enabled" at this particular time...) Thanks! Rob

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Prolog and squeak
by cdrick 07 Jun '08

07 Jun '08

Hi, What is the "best way" to use Prolog in squeak today ? - Prolog in squeak map seems broken in since 3.7. I tried loading, but I could solve the different problems (seems related to the parser used that is not based on SmallCC) - SOUL is said to be based on Prolog for squeak. So I loaded the last package (actually Primitives-KGb.0.1.mcz and SOUL-KGb.0.3.mcz). Is there a way to use SOUL as Prolog (I haven't learned much about it). I have the impression the primitive package can be where to start as it isolate all the logic independant to SOUL and LiQuor - Maybe using an external Prolog, so how to make the two system communicate ? Thanks Cédrick

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Re: [Newbies] Ubuntu and Squeak
by Hanita Bte Abd Hamid 06 Jun '08

06 Jun '08

Im sorry,but this mail belongs to my work. I can't handle too much emails. How do I unsubscibe and change the subscribe mailing address. Pls advice. Thanks ---------------------------------------- From: "Michael van der Gulik" <mikevdg(a)gmail.com> Sent: Thursday, June 05, 2008 9:55 AM To: rjriv(a)sbcglobal.net, "A friendly place to get answers to even the most basic questions about Squeak." <beginners(a)lists.squeakfoundation.org> Subject: Re: [Newbies] Ubuntu and Squeak On Thu, Jun 5, 2008 at 10:07 AM, Rob Rothwell <r.j.rothwell(a)gmail.com> wrote: Ok...so we sort of got Ubuntu running on a server...which VM should I go get? (Yes, I am so NOT "Linux-enabled" at this particular time...) Hi Rob. It depends on your architecture. If you're just running on 32-bit x86, you can just use the latest Linux VM from http://www.squeak.org/Download. Here's a direct link, because I'm such a nice guy and my browser is open on it anyway: http://ftp.squeak.org/3.10/unix-linux/Squeak-3.10-1.i686-pc-linux-gnu.tar.gz IIRC there may be a VM that is installable from Ubuntu's package manager. That would work as well. If you installed the AMD64 bit version of Ubuntu, then things are a bit trickier. Then you'll need to look at http://www.squeakvm.org/. Gulik. -- http://people.squeakfoundation.org/person/mikevdg http://gulik.pbwiki.com/

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Proper object removal
by Rob Rothwell 05 Jun '08

05 Jun '08

Hello, After much help already, I think I need some training in proper object removal. When my application creates an object and stores it in an OrderedCollection, and than wants to delete it, I am trying to do so quite explicitly with something like: DataManager>>deleteSelectedAbstractors self selected do: [:each | self abstractors remove: each. each := nil. ] which removes the object from my application (it's collection), and yet when I look for my object in the system with DataAbstractor allInstances. I still see the object I removed, even with an explicit Smalltalk garbageCollect or garbageCollectMost. Anything I create just seems to hang around forever. Any help understanding what I need to do to make sure my objects really go away when I am done with them would be greatly appreciated! Rob

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Squeak and Pocket PC
by Андрей 05 Jun '08

05 Jun '08

Hello. First and foremost I want to apologize my English - it on the conscience of Google Translate. I want to ask for help in the next issue. I have a Pocket PC with Winodows Mobile 5. I run on it Squeak 3.9, but it need a mouse with three buttons. Therefore, many operations are not available to me (for example, the call halo). Maybe there is a way to emulate pushing the right and middle mouse buttons as something? Another problem is that most of the Squeak windows is too large for Pocket PC screen. Maybe you can scroll windows as something? Thank you in advance. Andrew

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underscore / left-arrow query
by Kel Graham 04 Jun '08

04 Jun '08

hello, when i first started using squeak a couple of years ago, the assignment operator was displayed as a left arrow, which i really like. it looks very clean to my eyes (better to me than the pascal like := syntax). in my current image, a seaside 2.8-530 image, in workspaces etc, i don't get my lovely left arrow when I assign variables; just a regular underscore. is it now considered bad form to use the left arrow, or can I set this in preferences somewhere such that my underscore is converted to an exciting left-arrow? if it's bad form or broken, i'll mend my ways. I tried to search for preference settings, but without joy. Google had an unreasonably high noise ratio as well. thanks. Kel.

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Creating a SUnit Test for A Morphic Object
by Jason Burke 03 Jun '08

03 Jun '08

Hello All, I'm new to the list here, and I have a question on creating SUnit tests for Morphs. In my latest bi-annual "Squeak Peek", something clicked that hadn't in the past 3 years of periodically checking into Squeak: It started to make sense (I usually give up in frustration after a week or so, but the, "Squeak by Example" book has really helped this time. Kudos to the writers). So, I started digging around in the Morphic classes, and I stumbled across, what appeared to be, a bug in LedDigitMorph. I played around with it until I felt satisfied that it was indeed a bug, and then submitted a report to bugs.squeak.org. The powers that be agreed that this looked like a bug, and asked me to do a little more footwork on it (I had submitted my fix with the report). However, I'm not quite sure how to accomplish what was requested. Here's the bug (mantis ID: 0007067), and a test case: LedDigitMorph does not change its state after receiving a digit: message. You have to click on the morph before it changes. The test case is: myDigit := LedDigitMorph new openInWorld. myDigit digit: 2. The morph will not show the number 2 until you click on it. I solved this bug in my image by changing the digit: message to this: digit: anInteger digit _ anInteger \\ 10. "make sure it stays between 0 and 9" self changed. The response I got back asked me to create a SUnit test for this issue (One that fails before the patch and passes afterwards). Unfortunately, I'm not sure how to do this (though I'd be happy to continue to work on it). Can someone give me some guidance on how to go about creating SUnit test cases for this Morphic object? Thanks, Jason

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Beginners June 2008